On the left bank of the Medveditsa River, at the mouth of the Dobrynka, lies the village of Lower Dobrynka. On the opposite side of the Medveditsa, along the river, is the village of Egorovka. Downstream from Egorovka is the former estate of merchant Borel, now the workers' settlement of Melzavod. Due to centuries of the river's shifting course to the right, a wide lowland has formed, covered with mixed deciduous forest and grassy meadows. In spring, during the flood, the forest and meadows are submerged in water. At the highest point of the settlement stands the factory building, resembling an ancient castle. Its turrets, adorned with spires, look like launching rockets and are visible from afar, attracting the attention of passersby. The building is monumental, yet not heavy, as if striving upwards. The ash-pink brick has retained its color since the time of construction.

Ivan Borel founded a trading company in 1848, and in 1876 he acquired land two kilometers from the village of Lower Dobrynka in the Kamyshin district for the construction of a mill and estate.

From 1892 to 1908, the mill in the village of Lower Dobrynka processed 36 million poods of wheat.

In 1890, with the start of construction of a new railway, the mill in Lower Dobrynka was expanded and production was modernized, implementing the advanced technologies of the time. The building made an indelible impression on the peasants: red-brick, five-story, with end towers, it resembled a medieval castle in Gothic style. Experts of that time estimated that the building could stand for at least 200 years.

There is a rumor that chicken eggs were added to the mortar for strength during construction. Indeed, there are still no cracks in the masonry. Upon learning about the new mill, grain began to be transported here from various places, such as Balashov and Saratov. Flour was sent by railway to Astrakhan, Kamyshin, Nizhny Novgorod, St. Petersburg, Moscow, and even abroad.

After the revolution, the mill was nationalized, and it experienced ups and downs. Today, the enterprise, known as LLC 'Borel Mill', is a modern production complex covering 7.4 hectares.